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Password Strength Meter — Free Online Tool

🔑 Features

🧮 Entropy Analysis

Measures password randomness in bits.

⏱️ Crack Time

Estimates offline brute-force time.

🔒 100% Private

Runs entirely in your browser — nothing sent to server.

📋 How It Works

  1. Type your password in the box (it stays local)
  2. Entropy, length, and character pool are calculated
  3. See an instant crack-time estimate and improvement tips

❓ FAQ

Is my password sent to a server?

No. Everything runs client-side in your browser. Your password never leaves your device.

What's password entropy?

Entropy measures randomness in bits. Higher entropy = stronger password. A good password has 60+ bits of entropy.

What's a strong password length?

At least 12 characters with a mix of uppercase, lowercase, numbers, and symbols. Longer is always better than complex.

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